LINUX安装环境
一、RPM方式安装JDK
1、安装JDK
rpm -ivh jdk-8u261-linux-x64.rpm #安装jdk
java -version #检测jdk是否安装完成
java version "1.8.0_261"
Java(TM) SE Runtime Environment (build 1.8.0_261-b12)
Java HotSpot(TM) 64-Bit Server VM (build 25.261-b12, mixed mode)
2、卸载JDK
[root@iZwz9dqceasr3uf62c747nZ zhangsha]# rpm -qa|grep jdk #检测JDK的版本 jdk1.8-1.8.0_261-fcs.x86_64 [root@iZwz9dqceasr3uf62c747nZ zhangsha]# rpm -e --nodeps jdk1.8-1.8.0_261-fcs.x86_64 #强制卸载JDK,根据得出的JDK版本号 rpm -qa|grep jdk
[root@iZwz9dqceasr3uf62c747nZ zhangsha]# java -version
-bash: /usr/bin/java: No such file or directory
二、yum方式安装MYSQL
1、下载并安装MySQL官方的 Yum Repository https://dev.mysql.com/downloads/repo/yum/ (下载的是5.7.25版本)
[root@iZwz9dqceasr3uf62c747nZ home]# wget http://dev.mysql.com/get/mysql57-community-release-el7-10.noarch.rpm
2、直接用yum安装MYSQL
[root@iZwz9dqceasr3uf62c747nZ home]# yum -y install mysql57-community-release-el7-10.noarch.rpm
3、 安装MySQL服务器
[root@iZwz9dqceasr3uf62c747nZ home]# yum -y install mysql-community-server
4、查看安装的MYSQL
[root@iZwz9dqceasr3uf62c747nZ home]# rpm -qa|grep mysql mysql57-community-release-el7-10.noarch mysql-community-common-5.7.31-1.el7.x86_64 mysql-community-client-5.7.31-1.el7.x86_64 mysql-community-server-5.7.31-1.el7.x86_64 mysql-community-libs-5.7.31-1.el7.x86_64 mysql-community-libs-compat-5.7.31-1.el7.x86_64